diff --git a/apps/frontend/src/pages/servers/index.vue b/apps/frontend/src/pages/servers/index.vue
index f5dbb3171..371538c19 100644
--- a/apps/frontend/src/pages/servers/index.vue
+++ b/apps/frontend/src/pages/servers/index.vue
@@ -22,6 +22,8 @@
       :payment-methods="paymentMethods"
       :return-url="`${config.public.siteUrl}/servers/manage`"
       :server-name="`${auth?.user?.username}'s server`"
+      :fetch-capacity-statuses="fetchCapacityStatuses"
+      :out-of-stock-url="outOfStockUrl"
       @hidden="handleModalHidden"
     />
 
@@ -523,29 +525,34 @@
               $12<span class="text-sm font-normal text-secondary">/month</span>
             </h2>
             <ButtonStyled color="blue" size="large">
-              <button
-                v-if="!isSmallAtCapacity"
-                class="!bg-highlight-blue !font-medium !text-blue"
-                @click="selectProduct(pyroPlanProducts[0])"
-              >
-                Get Started
-                <RightArrowIcon class="!min-h-4 !min-w-4 !text-blue" />
-              </button>
               <NuxtLink
-                v-else
-                :to="loggedOut ? redirectUrl : 'https://support.modrinth.com'"
-                :target="loggedOut ? '_self' : '_blank'"
+                v-if="loggedOut"
+                :to="loginUrl"
+                target="_self"
                 class="!bg-highlight-blue !font-medium !text-blue"
               >
-                <template v-if="loggedOut">
-                  Login
-                  <UserIcon class="!min-h-4 !min-w-4 !text-blue" />
-                </template>
-                <template v-else>
+                Login
+                <UserIcon class="!min-h-4 !min-w-4 !text-blue" />
+              </NuxtLink>
+              <template v-else>
+                <NuxtLink
+                  v-if="isSmallAtCapacity"
+                  :to="outOfStockUrl"
+                  target="_blank"
+                  class="!bg-highlight-blue !font-medium !text-blue"
+                >
                   Out of Stock
                   <ExternalIcon class="!min-h-4 !min-w-4 !text-blue" />
-                </template>
-              </NuxtLink>
+                </NuxtLink>
+                <button
+                  v-else
+                  class="!bg-highlight-blue !font-medium !text-blue"
+                  @click="selectProduct(pyroPlanProducts[0])"
+                >
+                  Get Started
+                  <RightArrowIcon class="!min-h-4 !min-w-4 !text-blue" />
+                </button>
+              </template>
             </ButtonStyled>
           </li>
 
@@ -581,29 +588,34 @@
               $18<span class="text-sm font-normal text-secondary">/month</span>
             </h2>
             <ButtonStyled color="brand" size="large">
-              <button
-                v-if="!isMediumAtCapacity"
-                class="shadow-xl"
-                @click="selectProduct(pyroPlanProducts[1])"
-              >
-                Get Started
-                <RightArrowIcon class="!min-h-4 !min-w-4" />
-              </button>
               <NuxtLink
-                v-else
-                :to="loggedOut ? redirectUrl : 'https://support.modrinth.com'"
-                :target="loggedOut ? '_self' : '_blank'"
+                v-if="loggedOut"
+                :to="loginUrl"
+                target="_self"
                 class="!bg-highlight-green !font-medium !text-green"
               >
-                <template v-if="loggedOut">
-                  Login
-                  <UserIcon class="!min-h-4 !min-w-4 !text-green" />
-                </template>
-                <template v-else>
+                Login
+                <UserIcon class="!min-h-4 !min-w-4 !text-green" />
+              </NuxtLink>
+              <template v-else>
+                <NuxtLink
+                  v-if="isMediumAtCapacity"
+                  :to="outOfStockUrl"
+                  target="_blank"
+                  class="!bg-highlight-green !font-medium !text-green"
+                >
                   Out of Stock
                   <ExternalIcon class="!min-h-4 !min-w-4 !text-green" />
-                </template>
-              </NuxtLink>
+                </NuxtLink>
+                <button
+                  v-else
+                  class="!bg-highlight-green !font-medium !text-green"
+                  @click="selectProduct(pyroPlanProducts[1])"
+                >
+                  Get Started
+                  <RightArrowIcon class="!min-h-4 !min-w-4 !text-green" />
+                </button>
+              </template>
             </ButtonStyled>
           </li>
 
@@ -628,34 +640,39 @@
               $24<span class="text-sm font-normal text-secondary">/month</span>
             </h2>
             <ButtonStyled color="purple" size="large">
-              <button
-                v-if="!isLargeAtCapacity"
-                class="!bg-highlight-purple !font-medium !text-purple"
-                @click="selectProduct(pyroPlanProducts[2])"
-              >
-                Get Started
-                <RightArrowIcon class="!min-h-4 !min-w-4 !text-purple" />
-              </button>
               <NuxtLink
-                v-else
-                :to="loggedOut ? redirectUrl : 'https://support.modrinth.com'"
-                :target="loggedOut ? '_self' : '_blank'"
+                v-if="loggedOut"
+                :to="loginUrl"
+                target="_self"
                 class="!bg-highlight-purple !font-medium !text-purple"
               >
-                <template v-if="loggedOut">
-                  Login
-                  <UserIcon class="!min-h-4 !min-w-4 !text-purple" />
-                </template>
-                <template v-else>
+                Login
+                <UserIcon class="!min-h-4 !min-w-4 !text-purple" />
+              </NuxtLink>
+              <template v-else>
+                <NuxtLink
+                  v-if="isLargeAtCapacity"
+                  :to="outOfStockUrl"
+                  target="_blank"
+                  class="!bg-highlight-purple !font-medium !text-purple"
+                >
                   Out of Stock
                   <ExternalIcon class="!min-h-4 !min-w-4 !text-purple" />
-                </template>
-              </NuxtLink>
+                </NuxtLink>
+                <button
+                  v-else
+                  class="!bg-highlight-purple !font-medium !text-purple"
+                  @click="selectProduct(pyroPlanProducts[2])"
+                >
+                  Get Started
+                  <RightArrowIcon class="!min-h-4 !min-w-4 !text-purple" />
+                </button>
+              </template>
             </ButtonStyled>
           </li>
         </ul>
 
-        <!-- <div
+        <div
           class="flex w-full flex-col items-start justify-between gap-4 rounded-2xl bg-bg p-8 text-left md:flex-row md:gap-0"
         >
           <div class="flex flex-col gap-4">
@@ -668,33 +685,18 @@
 
           <div class="flex w-full flex-col-reverse gap-2 md:w-auto md:flex-col md:items-center">
             <ButtonStyled color="standard" size="large">
-              <button
-                v-if="!isLargeAtCapacity"
-                class="w-full md:w-fit"
-                @click="selectProduct(pyroProducts, true)"
-              >
+              <NuxtLink v-if="loggedOut" :to="loginUrl" target="_self" class="w-full md:w-fit">
+                Login
+                <UserIcon class="!min-h-4 !min-w-4" />
+              </NuxtLink>
+              <button v-else class="w-full md:w-fit" @click="selectProduct(pyroProducts, true)">
                 Build your own
                 <RightArrowIcon class="!min-h-4 !min-w-4" />
               </button>
-              <NuxtLink
-                v-else
-                :to="loggedOut ? redirectUrl : 'https://support.modrinth.com'"
-                :target="loggedOut ? '_self' : '_blank'"
-                class="w-full md:w-fit"
-              >
-                <template v-if="loggedOut">
-                  Login
-                  <UserIcon class="!min-h-4 !min-w-4" />
-                </template>
-                <template v-else>
-                  Out of Stock
-                  <ExternalIcon class="!min-h-4 !min-w-4" />
-                </template>
-              </NuxtLink>
             </ButtonStyled>
             <p class="m-0 text-sm">Starting at $3/GB RAM</p>
           </div>
-        </div> -->
+        </div>
       </div>
     </section>
   </div>
@@ -770,7 +772,8 @@ const deletingSpeed = 25;
 const pauseTime = 2000;
 
 const loggedOut = computed(() => !auth.value.user);
-const redirectUrl = `/auth/sign-in?redirect=${encodeURIComponent("/servers#plan")}`;
+const loginUrl = `/auth/sign-in?redirect=${encodeURIComponent("/servers#plan")}`;
+const outOfStockUrl = "https://support.modrinth.com";
 
 const { data: hasServers } = await useAsyncData("ServerListCountCheck", async () => {
   try {
@@ -782,37 +785,47 @@ const { data: hasServers } = await useAsyncData("ServerListCountCheck", async ()
   }
 });
 
-const { data: capacityStatuses, refresh: refreshCapacity } = await useAsyncData(
-  "ServerCapacityAll",
-  async () => {
-    try {
-      const capacityChecks = pyroPlanProducts.map((product) =>
-        usePyroFetch("capacity", {
-          method: "POST",
-          body: {
-            cpu: product.metadata.cpu,
-            memory_mb: product.metadata.ram,
-            swap_mb: product.metadata.swap,
-            storage_mb: product.metadata.storage,
-          },
-        }),
-      );
+async function fetchCapacityStatuses(customProduct = null) {
+  try {
+    const productsToCheck = customProduct?.metadata ? [customProduct] : pyroPlanProducts;
+    const capacityChecks = productsToCheck.map((product) =>
+      usePyroFetch("capacity", {
+        method: "POST",
+        body: {
+          cpu: product.metadata.cpu,
+          memory_mb: product.metadata.ram,
+          swap_mb: product.metadata.swap,
+          storage_mb: product.metadata.storage,
+        },
+      }),
+    );
 
-      const results = await Promise.all(capacityChecks);
+    const results = await Promise.all(capacityChecks);
+    if (customProduct?.metadata) {
+      return {
+        custom: results[0],
+      };
+    } else {
       return {
         small: results[0],
         medium: results[1],
         large: results[2],
       };
-    } catch (error) {
-      console.error("Error checking server capacities:", error);
-      return {
-        small: { available: 0 },
-        medium: { available: 0 },
-        large: { available: 0 },
-      };
     }
-  },
+  } catch (error) {
+    console.error("Error checking server capacities:", error);
+    return {
+      custom: { available: 0 },
+      small: { available: 0 },
+      medium: { available: 0 },
+      large: { available: 0 },
+    };
+  }
+}
+
+const { data: capacityStatuses, refresh: refreshCapacity } = await useAsyncData(
+  "ServerCapacityAll",
+  fetchCapacityStatuses,
 );
 
 const isSmallAtCapacity = computed(() => capacityStatuses.value?.small?.available === 0);
@@ -931,7 +944,7 @@ const selectProduct = async (product, custom) => {
   }
 
   if (!auth.value.user) {
-    data.$router.push(redirectUrl);
+    data.$router.push(loginUrl);
     return;
   }
 
diff --git a/packages/ui/src/components/billing/PurchaseModal.vue b/packages/ui/src/components/billing/PurchaseModal.vue
index 9b0b901ca..ebacc207f 100644
--- a/packages/ui/src/components/billing/PurchaseModal.vue
+++ b/packages/ui/src/components/billing/PurchaseModal.vue
@@ -109,14 +109,17 @@
             <Slider
               v-model="customServerConfig.ramInGb"
               class="fix-slider"
-              :min="2"
-              :max="12"
+              :min="customMinRam"
+              :max="customMaxRam"
               :step="2"
               unit="GB"
             />
             <div class="font-semibold text-nowrap"></div>
           </div>
-          <div v-if="customMatchingProduct" class="flex sm:flex-row flex-col gap-4 w-full">
+          <div
+            v-if="customMatchingProduct && !customOutOfStock"
+            class="flex sm:flex-row flex-col gap-4 w-full"
+          >
             <div class="flex flex-col w-full gap-2">
               <div class="font-semibold">vCPUs</div>
               <input v-model="mutatedProduct.metadata.cpu" disabled class="input" />
@@ -134,7 +137,15 @@
               <div class="flex flex-row gap-4">
                 <InfoIcon class="hidden flex-none h-8 w-8 text-blue sm:block" />
 
-                <div class="flex flex-col gap-2">
+                <div v-if="customOutOfStock && customMatchingProduct" class="flex flex-col gap-2">
+                  <div class="font-semibold">This plan is currently out of stock</div>
+                  <div class="font-normal">
+                    We are currently
+                    <a :href="outOfStockUrl" class="underline" target="_blank">out of capacity</a>
+                    for your selected RAM amount. Please try again later, or try a different amount.
+                  </div>
+                </div>
+                <div v-else class="flex flex-col gap-2">
                   <div class="font-semibold">We can't seem to find your selected plan</div>
                   <div class="font-normal">
                     We are currently unable to find a server for your selected RAM amount. Please
@@ -383,7 +394,7 @@
           :disabled="
             paymentLoading ||
             (mutatedProduct.metadata.type === 'pyro' && !projectId && !serverName) ||
-            (customServer && !customMatchingProduct)
+            customAllowedToContinue
           "
           @click="nextStep"
         >
@@ -545,6 +556,16 @@ const props = defineProps({
     type: Boolean,
     required: false,
   },
+  fetchCapacityStatuses: {
+    type: Function,
+    required: false,
+    default: null,
+  },
+  outOfStockUrl: {
+    type: String,
+    required: false,
+    default: '',
+  },
 })
 
 const messages = defineMessages({
@@ -631,7 +652,16 @@ const serverLoader = ref('Vanilla')
 const eulaAccepted = ref(false)
 
 const mutatedProduct = ref({ ...props.product })
+const customMinRam = ref(0)
+const customMaxRam = ref(0)
 const customMatchingProduct = ref()
+const customOutOfStock = ref(false)
+const customLoading = ref(true)
+const customAllowedToContinue = computed(
+  () =>
+    props.customServer &&
+    (!customMatchingProduct.value || customLoading.value || customOutOfStock.value),
+)
 
 const customServerConfig = reactive({
   ramInGb: 4,
@@ -640,23 +670,48 @@ const customServerConfig = reactive({
 })
 
 const updateCustomServerProduct = () => {
-  if (props.customServer) {
-    customMatchingProduct.value = props.product.find(
-      (product) => product.metadata.ram === customServerConfig.ram,
-    )
+  customMatchingProduct.value = props.product.find(
+    (product) => product.metadata.ram === customServerConfig.ram,
+  )
 
-    if (customMatchingProduct.value) mutatedProduct.value = { ...customMatchingProduct.value }
+  if (customMatchingProduct.value) mutatedProduct.value = { ...customMatchingProduct.value }
+}
+
+let updateCustomServerStockTimeout = null
+const updateCustomServerStock = async () => {
+  if (updateCustomServerStockTimeout) {
+    clearTimeout(updateCustomServerStockTimeout)
+    customLoading.value = true
   }
+
+  updateCustomServerStockTimeout = setTimeout(async () => {
+    if (props.fetchCapacityStatuses) {
+      const capacityStatus = await props.fetchCapacityStatuses(mutatedProduct.value)
+      if (capacityStatus.custom?.available === 0) {
+        customOutOfStock.value = true
+      } else {
+        customOutOfStock.value = false
+      }
+      customLoading.value = false
+    } else {
+      console.error('No fetchCapacityStatuses function provided.')
+      customOutOfStock.value = true
+    }
+  }, 300)
 }
 
 if (props.customServer) {
-  updateCustomServerProduct()
-  watch(
-    () => customServerConfig.ram,
-    () => {
-      updateCustomServerProduct()
-    },
-  )
+  const ramValues = props.product.map((product) => product.metadata.ram / 1024)
+  customMinRam.value = Math.min(...ramValues)
+  customMaxRam.value = Math.max(...ramValues)
+
+  const updateProductAndStock = () => {
+    updateCustomServerProduct()
+    updateCustomServerStock()
+  }
+
+  updateProductAndStock()
+  watch(() => customServerConfig.ram, updateProductAndStock)
 }
 
 const selectedPaymentMethod = ref()